Pigs don’t have much fur. That’s a problem in winter. But they have a thick layer of fat under their skin. That fat is like a built-in winter coat. It insulates them better than any sweater you own.
Here’s the kicker: pigs are terrible at sweating. They have almost no sweat glands. So they overheat fast in summer. But in cold weather? That’s their secret superpower. They save energy by shivering less.
